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Abacus - Wikipedia

https://en.wikipedia.org/wiki/abacus

“An abacus (pl. abaci or abacuses), also called a counting frame, is a hand-operated calculating tool which was used from ancient times, in the ancient Near East, Europe, China, and Russia, till largely replaced by handheld electronic Calculators, during the 1980s, with some ongoing attempts to...” (from the page’s text)

Topic: Education
Quality: Quality 84 scored 12 Aug 2025
Language: english
Text on page: 37,504 characters
Page size: 296 kB
Answered: OK (200), HTML
Last read: 7 Jul 2025
In our index since: 7 Jul 2025
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